Message-ID: <3F97133D.2070500@nc.rr.com>
Date: Wed, 22 Oct 2003 19:31:09 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: EWP check valves
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DELTAFLYER@prodigy.net wrote:
> Ernest,
> Getting the water to and from a remotely mounted 
> radiator is not as big an issue as getting enough 
> airflow through it while on the ground taxiing.
> Chances are the engine will overheat before you even 
> get to the end of the runway.
> How do you propose the cool the engine on the ground?
> Just curious, as Kelly Troyer was comtemplating 
> remotely mounting his radiators too. I don't know what 
> he finally decided.

Picking the air up from the wheel well's rear wall, and dumping it at 
the rear of the turtle back.

Nearly half of the prop is pushing air under the plane, and the plane 
sits at about 8 to 9 degrees incidence on its gear. Even on the ground, 
there is going to be a high pressure area at those wheel wells, and if 
the prop is turning, there is going to be a partial vacuum near the end 
of the turtleback.  It won't get full flow like it will in flight, but 
I'm confident it will be enough for ground operations.  If it is not 
enough, I'll get 'creative' with wheel fairings or gear doors to direct 
more air down the intake...build in a scoop that gets retracted with the 
gear.


-- 
http://www.ernest.isa-geek.org/
"Ignorance is mankinds normal state,
   alleviated by information and experience."
                                   Veeduber